Site work for a water / sewer project in Peachtree City, Georgia. Completed plans call for site work for a water / sewer project.

Structural concrete repairs to the Lake McIntosh Dam spillway structure. Lake McIntosh Dam Spillway Structural Repairs 1. Travel to Lake McIntosh Dam and coordinate access and work activities with Fayette County Water System (FCWS). 2. Provide all labor, supervision, materials, equipment, access equipment, protection, cleanup, and incidentals necessary to complete the work described in this Scope of Work and the referenced repair specifications. 3. Review the Arcadis Structural Evaluation Report, crack mapping figures, and Attachment A - Lake McIntosh Dam Spillway Structure Photograph Log before beginning work. The crack maps and photographs shall be used to identify and locate the repair areas. 4. Prepare and repair non-structural cracks greater than 0.01 inches in width on the north and south spillway walls in accordance with the non-structural crack and leakage repair system specified in the Repair Specifications. 5. Repair leakage locations associated with construction joints, form ties, formwork joints, and other documented leakage paths on the north and south wall interior faces and labyrinth weir wall . Refer to Photographs 28 through 37 and the crack mapping figures for representative locations. 6. Repair diagonal cracks identified as potential shear cracks on the north and south spillway walls using the structural crack repair system specified in the Repair Specifications. The contractor shall repair all observed diagonal shear-type cracks identified in the Arcadis assessment and associated photograph log, including the closely spaced diagonal cracking in the sloped wall areas. 7. Repair cracks that overlap or propagate from formwork tie holes. These areas shall be properly prepared and patched in accordance with the Repair Specifications. 8. Repair concrete surface deterioration, including minor spalling, voids, bug holes, and exposed aggregate, where identified in the assessment and photograph log. Representative conditions are shown in Photographs 24 through 27. 9. Repair and patch concrete at the wall-to-slab joint areas where minor spalling or unsound concrete is present, using the specified concrete repair mortar system. 10. Cracks less than 0.01 inches in width that are identified by the Arcadis assessment as monitor-only conditions shall not be repaired unless directed by FCWS. The contractor shall document such conditions encountered during the work and notify FCWS of any crack that appears to have changed materially from the documented condition. 11. Because portions of the exterior wall were inaccessible during the Arcadis assessment due to backfill material , the contractor shall notify FCWS if additional access, excavation, or other work is determined to be necessary to complete a repair. No excavation or removal of backfill shall be performed without prior written authorization from FCWS. 12. Protect existing structures, pedestrian bridge components, drain outlets, gates, piping, coatings, and other site features from damage during the work. 13. Perform surface preparation in accordance with applicable NACE, ICRI , and ACI guidelines and the repair product manufacturer's written instructions. 14. Install all repair materials in strict accordance with the manufacturer's written installation requirements, including substrate preparation, mixing, placement, curing, temperature limitations, and required dry or wet conditions. 15. Provide product data sheets, technical data, safety data sheets, installation procedures, and any other requested submittals for FCWS approval before installation of repair materials. 16. Inspect completed repairs with FCWS and address any deficient, incompletely bonded, improperly finished, or otherwise unacceptable work at no additional cost to FCWS. 17. Remove all construction debris and excess materials from the spillway structure and surrounding work area. Leave the site clean and suitable for return to service. 18. Provide photographic documentation of completed repairs, including representative before-and-after photographs and identification of repaired locations. 19. Coordinate completion of the work so that the spillway structure can be returned to service in accordance with FCWS direction. REPAIR SPECIFICATIONS - The repair systems, materials, and performance requirements listed below are based on Section 4 of the Arcadis Lake McIntosh and Lake Kedron Dam Spillway Walls Structural Assessment dated October 27, 2023. These requirements may be provided as Attachment B - Structural Repair Specifications with the RFQ. Where a product is identified, an approved equal may be proposed for FCWS approval Non-Structural Crack and Leakage Repair System o Hydrophobic polyurethane chemical grout forming a flexible gasket. Acceptable products include SikaFix HH LV by Sika Chemical Company, Hydro Active Flex SLV by De Neef Construction Chemicals, Inc., or approved equal. o Hydrophobic polyurethane shall have a shrinkage limit not exceeding 4.0 percent in accordance with ASTM D1042, minimum elongation of 250 percent in accordance with ASTM D3574, and minimum tensile strength of 150 psi in accordance with ASTM D3574. o Hydrophilic acrylate-ester resin forming a flexible gasket and increasing in volume by at least 50 percent when in contact with water. Acceptable product includes Duroseal Multigel 850 by BBZ USA, Inc., or approved equal. Structural Crack Repair System o Epoxy injection shall be a low-viscosity, high-modulus, moisture-insensitive type. o Acceptable products include Sikadur 35, Hi-Mod L.V. and Sikadur 31, Hi-Mod Gel by Sika Corporation; Eucopoxy Injection Resin by Euclid Chemical Company; or approved equal. Surface Deterioration Repair o Provide a prepackaged, cement-based repair mortar specifically formulated for repairing concrete surface defects. o Acceptable products include SikaTop 122 Plus, SikaTop 123 Plus, SikaTop 126 Plus by Sika Corporation; DuralTop Gel or DuralTop Flowable Mortar by Euclid Chemical Company; or approved equal. o Repair mortar shall be a two-component, polymer- modified Portland cement, fastsetting, trowel-grade mortar enhanced with a penetrating corrosion inhibitor. o Minimum one-day compressive strength : 2,000 psi in accordance with ASTM C109. o Minimum 28-day compressive strength: 6,000 psi in accordance with ASTM C109. o Minimum 28-day bond strength: 1,800 psi in accordance with ASTM C882, modified for use with repair mortars. o Where the least dimension of the placement in width or thickness exceeds four inches, extend repair mortar by adding aggregate as recommended by the repair mortar manufacturer. Question Deadline 11/09/2026 at 3:00 PM ET Questions concerning this Invitation to Bid should be addressed to Colette Cobb, Contract Administrator, in writing via email to ccobb@fayettecountyga.gov.